Delivery mechanism for printing presses



Sept. 14,1937. H.|M. B-ARBER I 2,093,228

- DELIVERY MECHANISM FOR PRINTING PRESSES Filed Nov. 14, 1935 4Sheets-Sheet 1 P 1937. H. M. BARBER I DELIVERY MECHANISM FOR PRINTINGPRESSES Filed NOV. 14, 1955 4 Sheets-Sheet 2 INVENTQR.

- ATTORNEYS Sept 1 4, 1937.

H. M. BARBER DELIVERY MECHANISM FOR PRINTING PRESSES Filed Nov. 14, 19354 Sheets-Sheet 5 INVENTOR Mfl M 1 Sept. 14, 1937. H. M. BARBER 3DELIVERY MECHANISM FOR PRINTING PRESSES Filed Nov. 14, 1935. 4Shets-Shee t 4 nv ENT OR.

ATTORNEYS Patented Sept. 14, 1937 DELIVERY MECHANISM FOR PRINTINGPRESBES Howard M. Barber, Pawcatuck, Com, assignor to C. B. Cottrell &Sons Company, Westerly, R. 1., a corporation of Delaware ApplicationNovember 14, 1935, Serial No. 49,683

10 Claims.

My invention is directed to improvements in flat sheet deliveries forweb printing presses and more particularly to novel means for operatingthe sheet tail end engaging devices whereby they are moved in an endlesspath and operated to successively grasp the tail end of a sheet, stopits travel and depress it below the path of its endless delivery carrierand then to release the tail end of the sheet after its supportingsurface on the delivery carrier has moved out from under it, therebypermitting the sheet to drop onto its pile.

A practical embodiment of my invention is represented in theaccompanying drawings in connection with a two pile flat sheet deliveryfor a rotary web printing press.

Figs. 1 and 1 represent in diagram a side elevation of so much of theprinting press and de livery as includes my invention.

Fig. 2 represents a detail side elevation, on a larger scale, of thegear trains connecting the inner and outer sets of sheet tail endengaging devices with each other and with their drive.

Fig. 3 represents a detail top plan view of the same.

Fig. 4 represents a detail end view, on a still larger scale, of the cammechanism for controlling the movement and operation of the sheet tailend engaging devices.

Fig. 5 represents a detail side view of the same.

Fig. 6 represents a detail horizontal section showing one of the sheettail end engaging devices and its adjacent parts.

Fig. '7 represents a detail vertical longitudinal section of the same.

Fig. 8 represents a detail end view of the same.

Fig. 9 represents a vertical longitudinal section of the same with thesheet tail end engaging device in a second position.

Fig. 10 represents a detail vertical longitudinal section of the samewith the sheet tail end engaging device in a third position.

Fig. 11 represents a detail vertical longitudinal section in anotherplane showing the sheet tail end engaging device in the said thirdposition.

Fig. 12 represents in diagram a side view showing the sheet tail endengaging device in full lines in one position, in dot and dash lines ina second position, in short dotted lines in a third position and in longdotted lines in a fourth position.

The rotary web printing press is herein shown as arranged to print infour colors on one side of the web, the impression cylinder beingdenoted by l and the form cylinders by 2, 3, 4, 5. The web is denoted by6 and the sheets cut from the web are denoted by l. The pair of rotarycoacting cutters for severing the sheets from the web are denoted by 8,O.

The inner horizontally disposed carrier Ill travels in an endless pathand it is driven at the surface speed of the press.

The outer horizontally disposed carrier ll travels in an endless pathand it is driven at a surface speed somewhat in excess of the surfacespeed of the press and the inner endless carrier.

A rotary transfer carrier I 2 is'interposed between the outer end of theinner endless carrier l0 and the inner end of the outer endless carrierll.

Side grippers It on the inner endless carrier l0 serve to advance a webthrough the coacting rotary cutters 8, 9 to the head grippers H on therotary transfer carrier l2, which head grippers in turn transfer thesheets cut from the printed web to the head grippers IS on the outerendless carrier II.

A horizontally disposed delivery carrier it travels in an endless patharound the inner and outer piles I1 and I8, which delivery carriertravels at the surface speed of the outer endless carrier H. Thisendless delivery carrier I6 .is provided with spaced sheet supportingsurfaces l9 arranged in the travel of the carrier to pass between theouter endless carrier II and the tops of the piles I1 and I8.

The sheet tail end engaging devices are herein shown as tall grippers,the relatively fixed lower jaw of each gripper being denoted by 20 andthe swinging upper jaw by 2|. These tail grippers are moved in anendless path and operated to take the sheets from the endle'ss deliverycarrier [6 and deposit the sheets onto their respective piles.

A stationary bracket 22 is laterally adjustable along the cross framebar 23 and it is locked. in its lateral adjustment by providing uprisingbolts 24 having their heads 25 slidable in an undercut groove 26 in thecross frame bar 23, said bolts being provided with clamp nuts 21engaging the lateral base flanges 28 of the said stationary bracket 22.

The vertical and longitudinal movements of the tail grippers areprovided for as follows:

The fixed and movable jaws 20 and 2| of-the tail grippers are mounted ona block 29 which is fitted to slide outwardly and inwardly on anotherblock 30 which is fitted to slide vertically on uprights of the bracket22, which vertically slid- 55 lng block-30 has a horizontal channel IIin which a stud or roller 32* on the free end of a lever arm 32 slides.This lever arm is fast on a rock shaft 33. Another lever arm 34 which isalso fast on the rock shaft 33 is provided with a stud or roller 28engaging the face of a lift cam 34 which is fast on a rotary cross shaft31. Spring pressed means 30 serve to hold the stud or roller II incontact with its cam 36.

The longitudinally sliding block 29 has a'vertical channel 39 in which astud or roller. 40 on the free end of an uprising lever arm 4| slides.This lever arm 4| is fast on a rock shaft .42. An other lever arm 43which is also fast on the rock shaft 42 is provided with a stud orroller 44 engaging the face of a cam' 45' fast.o'n the before mentionedrotary cross shaft 31. Spring pressed means 40 serve to hold the stud orroller in contact with its cam 45.

The swinging movement of the movable iaw H of the tail grippers to openand close the is provided for as follows:

The jaw 2| which is carried by the longitudinally movable block 29 isprovided with a toothed segment 41 which meshes with a horizonallydisposed rack bar 48 carried by the vertical movable block 30,.so thatas the block 20 is moved outwardly and inwardly the segment 41 is rolledalong the rack bar 40, thereby rocking the movable jaw 2| to close andopen the tail grippers.

It will be understood that while there may be as many tail grippers asdesired it is only necessary to employ one cam 30 and its'lever arm 34and one cam 45 and its lever arm 43 for each set of several grippers, asthe rock shafts .33 and 24 extend entirely across the machine and areprovided with their necessary number of lever arms 32 and 4|respectively.

Where a double pile delivery is employed the inner and outer cam shafts31 are each geared to a longitudinally disposed shaft 49 through a trainof gears 50 to 59 inclusive. The shaft 49 is geared to the shaft 60 ofthe speed-up rotary carrier I2 through the train of gears ii to 05inclusive. This shaft 60 may be driven from the shaft 00 at the outerend of the inner endless carrier I0 through the gears 61, to cause therotary carrier i2 to travel at a considerably greater surface speed thanthat of the said endless carrier i 0. The gear 64 is fast on the shaft00 at the inner end of the outer endless carrier ll so that this carrieris caused to travel at substantially the same surface speed as therotary carrier [2. It will also be understood that the endless deliverycarrier l6 may be driven at substantially the same surface speed as thatof the endless carrier II', by providing the gear 10 which is drivenfrom the gear 64 through the gears II and I2.

Cams l3 and 14 are positioned to open alternate head grippers IS on theouter endless carrier II as their sheets reach points over theirrespective inner and outer delivery piles l1 and I0.

In operation: As the printed web leaves the press it is engaged bysuccessive side grippers ii of the inner endless carrier l0 and advancedthrough the rotary cutters 0,0 which sever the sheets I from the web. Asthe sheets are severed the head grippers I4 on the rotary carrier l2grasp successive sheets, speed up their travel and transfer them tosuccessive sets of head grippers IS on the outer endless carrier ll.These head grippers l5 advance the sheets outwardly over the inner andouter piles, the sheets at the same time being supported by successivesheet supporting surfaces is of the endless delivery grippers aocasss I,

carrier I, which surfaces travel along with and under the outer endlesscarrier I I.

The alternate head grippers ll are opened by their respective cams "andII to release the leading ends of their respective sheets as the sheetsreach positions over the inner and outer piles i1 and i0 respectively.

As the leading ends of the sheets are released by the grippers I! thetail grippers which have been moved upwardly and outwardly through thespaces between the supporting surfaces I. of the endless deliverycarrier I are closed to grasp the tail ends of the sheets and stop theiroutward travel. The tail grippers while still grasping the tail ends ofthe sheets are then moved downwardly to points below the path of thesaid supporting surfaces of the endless delivery cardrop down onto theirrespective piles. After the a tail grippers reach the limit of theirinward movement they are moved upwardly and outwardly to complete theircycle of movement and operation.

While I have described the invention in connection witha double pilesheet delivery it is obvious that the cam mechanism canbe successfullyused to operate a single set of tail grippers for a single piledelivery. It will also be understood that while I have described a gearmecha nism for operatively connecting the several parts any othersuitable gear mechanism may he used for this purpose.

The delivery, except the tail grippers and their operating mechanisms,shown, described, but not claimed herein forms the subject matter of mycopending application filed of even date here- 1. A sheet deliverycomprising a delivery pile,

a horizontally disposed traveling endless carrier having spaced sheetadvancing devices, a secrier located beneath the first named carrier andhaving spaced sheet supporting surfaces, a'shcet tail end engagingdevice, and means for causing it to engage the tail end of the sheet,stop its travel and to release the'shect.

2. A sheet delivery comprising inner and outer delivery piles, ahorizontally disposed traveling endless carrier having spaced sheetadvancing devices, a second horizontally disposed traveling endlesscarrier located beneath the first named carrier and having spaced sheetsupporting surfaces, sheet tail endengaging devices, and means forcausing them to engage the tail ends of their respective sheets, stoptheir travel and to release the sheets.

ond horizontally disposed traveling endless cari,

disposed carrier located beneath the first named carrier and travelingin an endless path around the delivery pile and having spaced sheetsupporting surfaces, a sheet tail end engaging device, and means forcausing it to engage the tail end of the sheet, stop its travel and torelease the sheet.

4. A sheet delivery comprising a delivery pile, a horizontally disposedcarrier traveling in an endless path above said pile and having spacedhead grippers for advancing the sheets, a second horizontally disposedcarrier located beneath the first named carrier and traveling in anendless path around the delivery pile and having spaced sheet supportingsurfaces, tail grippers, and means for causing them to engage the tailend of the sheet, stop its travel and to release the sheet.

5. A sheet delivery comprising inner and outer delivery piles, ahorizontally disposed carrier traveling in an endless path above saidpiles and having spaced sheet head grippers for advancing the sheets, asecond horizontally disposed carrier located beneath the first namedcarrier and traveling in an endless path around the delivery piles andhaving spaced sheet supporting surfaces, tail grippers for each deliverypile, and means for causing them to engage the tail ends of theirrespective sheets, stop their travel and to release the sheets.

6. A gripper mechanism for sheet deliveries comprising a stationarysupport, a block slidable vertically thereon and having a longitudinallydisposed rack bar, another block slidable longitudinally on thevertically slidable block, tail grippers comprising fixed and rockingjaws mounted on the longitudinally slidable block, the rocldng jawhaving a toothed segment meshing with the rack bar, and means for movingthe respective blocks vertically and longitudinally, to

cause the tail grippers to be moved bodily and operate to grasp andrelease the sheet.

7. A gripper mechanism for sheet deliveries comprising a stationarysupport, a block slidable (I vertically.thereon and having alongitudinally disposed rack bar, another block slidable longitudinallyon the vertically slidable block, tail grippers comprising fixed androcking jaws mounted on the longitudinally. slidable block, the rockingjaw having a toothed segment meshing with the rack bar and two rotarycams operable to move their respective blocks vertically andlongitudinally, to cause the tail grippers to be moved bodily andoperate to grasp and release the sheet.

8. A gripper mechanism for sheet deliveries comprising a stationarysupport, a block slidable vertically thereon and having a longitudinallydisposed rack bar, another block slidable longitudinally on thevertically slidable block, tail grippers comprising fixed and rockingjaws mounted on the longitudinally slidable block, the rocking jawhaving a toothed segment meshing with the rack bar and two coaxiallymounted rotary cams operable to move their respective blocks verticallyand longitudinally, to cause the tail grippers to be moved bodily andoperate to grasp and release the sheet.

9. A gripper mechanism for sheet deliveries comprising a stationarysupport, a block slidable vertically thereon and having a longitudinallydisposed rack bar, another block slidable longitudinally on thevertically slidable block, tail grippers comprising fixed and rockingjaws mounted on the longitudinally slidable block, the rocking jawhaving a toothed segment meshing with the rack bar, and two rotary camsoperating to move their respective blocks vertically and longitudinally,to cause the tail grippers to be moved bodily and operate to grasp andrelease the sheet.

10. A gripper mechanism for sheet deliveries comprising a stationarysupport, a block having a longitudinally disposed rack bar, a rotarycam, a rock lever operated thereby for moving the block vertically, asecond block, a second rotary cam, a rock lever operated thereby forsliding the second block longitudinally on the first named block, andtail grippers comprising fixed and rocking jaws mounted on thelongitudinally slidableblock, the rocking Jaw having a toothed segmentmeshing with the rack bar whereby the tail grippers are bodily moved andoperated to grasp and release the sheet.

HOWARD M. BARBER.

